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US3800113A
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Panel mounted bezel for electrical switches
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Toggle switch
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Isolation-mounted vibratory reed device
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Vibrating-reed type electric instrument with built-up field and coil support
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Electric frequency responsive device
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Recording unit for audio teaching equipment
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Electric toggle switch
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Resonant reed frequency sensitive control apparatus
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Vibrating reed electrical frequency responsive device using self supporting coil
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Toggle switch
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Electrical frequency responsive device
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Vibrating reed electro-responsive device
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Vibrating reed comb assembly
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Frequency-responsive relay and indicator
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Frequency-responsive device
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Measuring or gauge device
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